/* -------------------------------------------------------------------------
 *
 * pg_largeobject.h
 *      definition of the system "largeobject" relation (pg_largeobject)
 *      along with the relation's initial contents.
 *
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/catalog/pg_largeobject.h
 *
 * NOTES
 *      the genbki.pl script reads this file and generates .bki
 *      information from the DATA() statements.
 *
 * -------------------------------------------------------------------------
 */
#ifndef PG_LARGEOBJECT_H
#define PG_LARGEOBJECT_H

#include "catalog/genbki.h"
#include "catalog/objectaddress.h"

/* ----------------
 *        pg_largeobject definition. cpp turns this into
 *        typedef struct FormData_pg_largeobject
 * ----------------
 */
#define LargeObjectRelationId  2613
#define LargeObjectRelation_Rowtype_Id 11325

CATALOG(pg_largeobject,2613) BKI_WITHOUT_OIDS BKI_SCHEMA_MACRO
{
    Oid         loid;            /* Identifier of large object */
    int4        pageno;          /* Page number (starting from 0) */

    /* data has variable length, but we allow direct access; see inv_api.c */
    bytea       data;            /* Data for page (may be zero-length) */
} FormData_pg_largeobject;

/* ----------------
 *        Form_pg_largeobject corresponds to a pointer to a tuple with
 *        the format of pg_largeobject relation.
 * ----------------
 */
typedef FormData_pg_largeobject *Form_pg_largeobject;

/* ----------------
 *        compiler constants for pg_largeobject
 * ----------------
 */
#define Natts_pg_largeobject            3
#define Anum_pg_largeobject_loid        1
#define Anum_pg_largeobject_pageno      2
#define Anum_pg_largeobject_data        3

extern Oid  LargeObjectCreate(Oid loid);
extern void LargeObjectDrop(Oid loid);
extern ObjectAddress LargeObjectAlterOwner(Oid loid, Oid newOwnerId);
extern bool LargeObjectExists(Oid loid);

#endif   /* PG_LARGEOBJECT_H */

